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Finding the Fourth Proportional to 39,889.20, 59,866.20 and 38,593.20

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Solution

The fourth proportional to 39,889.20, 59,866.20 and 38,593.20 is: 57,921.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,889.20 : 59,866.20 = 38,593.20 : x
  2. Step 2: Convert to fraction form
    39,889.20/59,866.20 = 38,593.20/x
  3. Step 3: Cross multiply
    39,889.20x = 59,866.20 × 38,593.20
  4. Step 4: Simplify right side
    39,889.20x = 2,310,428,229.84
  5. Step 5: Solve for x
    x = 2,310,428,229.84/39,889.20
  6. Step 6: Final answer
    x = 57,921.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.